                 Summary Of Inputs Used in Fcalc 2.0
 

                         Bearing Types     Speed Range         Vehicle Parameters
                                           mph  m/sec

                           R   L   S                        mass axles area  drag length

Locomotive         

 Passenger                 X   X           150  67.056       X     X     X     X
 Freight                   X   X            80  35.763       X     X     X     X
           
Steam Locomotive

 Passenger                 X       X       125  55.880       X     X     X     X
 Freight                   X       X        80  35.763       X     X     X     X

Freight Car

 Standard Freight Car      X   X   X        80  35.763       X     X     X
 Autorack                  X   X            80  35.763       X     X     X
 Empty Hopper              X   X   X        80  35.763       X     X     X
 TOFC                      X   X            80  35.763       X     X
 Spine Car                 X   X            80  35.763       X     X
 COFC(Double Stack)        X   X            80  35.763       X     X

Passenger Car              X   X           150  67.056       X     X     X
                                   X       100  44.704       X     X     X

Railcar

 Leading Railcar           X   X   X          input          X     X     X     X
 Middle Railcar            X   X   X          input          X     X     X
 End Railcar               X   X   X          input          X     X     X

High-Speed Train

 Locomotive             not applicable     250 111.760       X     X     X     X
 Passenger Car          not applicable     250 111.760       X     X     X           X

Maglev                  not applicable     350 156.464       X           X     X     X



Notes:

1) There are seven main vehicle categories-locomotive, steam locomotive, freight car, passenger car, railcar, high-speed train, and maglev.

2) Each category has several subtypes except for passenger cars and maglevs.

3) The types of bearings applicable to each car type are marked with an "X".  The types are roller(R), low-torque roller(L), and solid(S).  Note that passenger car has all three types of bearings.  I only used two separate lines above because the speed range for solid(friction) bearings is 100 mph while it is 150 mph for the other two types.  Bearing types are not applicable for high-speed trains and maglevs because I only used one set of equations for each(maglevs obviously don't have bearings or axles).

4) The speed range for each type is listed.  My code uses meters/sec.  For railcars I ask for the speed range in mph(later converted to meters/sec) since there is such a variation among railcar design speeds that any default speed range would be unsatisfactory.

5) There are five different data fields(mass, number of axles, area, drag coefficient, and length) but no type of rolling stock uses all five.  The applicable ones are marked with an "X".  As I already noted, railcars have an additional speed range input.

6) After the program comes up with the answer, there should be a new button to recalculate based on a custom speed range, as well as a data field for that speed range.

7) There is also a custom calculation screen where you can input Davis coefficients(in either English or Metric) directly along with a speed range and get an appropriate MSTS friction value.